Double Lip Shaft Seal

Double Sealing

The double sealing effect of the double lip shaft seal means that the two lips contact the shaft at the same time to form two independent sealing surfaces, thereby achieving double sealing of the shaft. This design can effectively improve sealing performance and reduce media leakage and the entry of external contaminants. The double-sealing effect of the double-lip shaft seal is compared to that of the single-lip shaft seal. The single-lip shaft seal has only one lip in contact with the shaft, and the sealing effect is relatively poor. Its two lips can be optimized for different media and working conditions to achieve the best sealing effect.

Material characteristics of double lip shaft seal

1. Corrosion resistance: Non-metallic materials such as polytetrafluoroethylene (PTFE) have excellent corrosion resistance and can resist the erosion of most chemical substances. Therefore, in highly corrosive environments, such as acids, alkalis, salts, and other media, double-lip shaft seals made of non-metallic materials have a good sealing effect.

2. Wear resistance: PTFE also has good wear resistance and can be used for a long time under friction and wear conditions. Therefore, in environments with severe friction and wear, such as pumps, compressors, and other equipment, the use of shaft seals made of non-metallic materials can maintain a longer service life.

3. Toughness: PTFE has good toughness and can maintain stable sealing performance under conditions such as impact and vibration. Therefore, in environments with severe shock and vibration, such as in the machinery manufacturing industry, double-lip shaft seals made of non-metallic materials can maintain a better sealing effect.

4. Convenient processing: PTFE can also be easily processed, such as injection molding, extrusion, etc., and can be made into seals of various shapes and sizes. Therefore, in seals that require mass production, double lip shaft seals made of non-metallic materials can conveniently meet various needs.